20753519494 has 4 divisors (see below), whose sum is σ = 31130279244. Its totient is φ = 10376759746.

The previous prime is 20753519489. The next prime is 20753519513. The reversal of 20753519494 is 49491535702.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5188379872 + ... + 5188379875.

It is an arithmetic number, because the mean of its divisors is an integer number (7782569811).

Almost surely, 2^20753519494 is an apocalyptic number.

20753519494 is a deficient number, since it is larger than the sum of its proper divisors (10376759750).

20753519494 is a wasteful number, since it uses less digits than its factorization.

20753519494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376759749.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 20753519494 in words is "twenty billion, seven hundred fifty-three million, five hundred nineteen thousand, four hundred ninety-four".